A SURVEY ON EMAIL BASED TRUST MANAGEMENT SYSTEM

Spoofing is a very common security threat to email applications. Several powerful techniques have been developed to counteract spoofing, but most of them are server-oriented and transparent to the user. Making up for the vast majority of emails transmitted, spam is an annoyance and potential security issue for users, and moreover a superfluous burden to the internet. Despite the maturity of today’s email infrastructure, it is difficult to ensure the authenticity of a sender address for inbound mails. This shortcoming is used by spammers to bypass existing spam protection systems and furthermore poses a security risk to users. Due to this a vast majority of spam emails today are sent from botnets with forged sender addresses. This has attracted researchers over the years to develop email sender authentication mechanism as a promising way to verify identity of the senders. Therefore an urgent need to new mechanisms to circumvent the spoofing threat.